A species of the genus ALOUATTA, family ATELIDAE, inhabiting the forests of South America. Although sometimes known as black howler only adult males have black hair and adult females and juveniles are gold in color. Closely related A. pigra in Central America and A. nigerrima in the Amazon are also called black howlers.

Synonyms: Black-and-Gold Howler Monkey, txid9502, Black and Gold Howler Monkeys, Paraguayan Black Howler Monkey, Mono Aulladors, Black Howler Monkey, Paraguayan, Monkey, Black-and-Gold Howler, Alouatta caraya, Howler Monkey, Black-and-Gold, Mono Aullador, Black-and-Gold Howler Monkeys